Improvement in book-stitching machines



2 Shets-Sheet 1..

A. A. JOHNSON. Book-Stitching Machine.

k No. 210,782. Patented Dec 10,1878

I Z a I a/ 2 g Z! a Z 1 j ENTOR UNITED STATE s PATENT OFFICE.

ASAHEL A. JOHNSON, OF WEST UNION, IOWA, ASSIGNOR OF ONE-HALF 'HISBIG-HTTO HENRY D. WASHBURN, OF SAME PLACE.

IMPROVEMENT IN BOOK-STlTCHlNG MACHINES.

Specification forming part of Letters Patent No. 210,782, dated December10, 1878 application filed October clear, and exact description of theconstruction and operation of the same, reference being had to theannexed drawings, making a part of this specification, and to theletters and figures of reference marked thereon.

Figure 1 of the drawings is a representation of a side elevation of mybook-stitching machine.- Fig. 2 is a vertical central sectional view ofthe same. Fig. 3 is an interior bottom-plan view, and Fig. 4 is a detailview, thereof.

The nature of my invention consists in the construction and arrangementof a machine for stitching pamphlets, magazines, &c., as will behereinafter more fully set forth.

The annexed drawings, to which reference is made, fully illustrate myinvention.

A represents the base of the machine, on which is secured the bedplateB. This plate has a longitudinal slot, a, for the passage of theneedles, and on top of the plate is a gage, G, which. is preferably madeadjustable.

Over the bed-plate B on the base A is erected a suitable frame-work, E,in which is a vertically-reciprocating cross'head, D, connected by linksI) b with the operating-lever F. In the under side of the cross-head isinserted and fastened a needle-holder,f, havingsuitable sockets for theinsertion of the needles (1 d, which are held in place by set-screws ec. The needles d are straight, and each needle is formed on one sidewith a hook, w, something like an ordinary crochet-needle.

G is a stationary guide-bar, having perforations for the passage oi theneedles, and under which the back of the pamphlet to be stitched isplaced. The rear end of the operating-lcver F is secured to arock-shaft, H, provided at each end with an arm, I, and the lower endsof these arms are, by rods J J, connected with the ends of a cross-bar,L, which slides in suitable guides under the base A. The end of each rodJ, which connects p with the cross-bar, is slotted, as shown, so thatthere will be a certain amount of play or movement of the operatingleverin either direction up or down before the bar L will cont mence itsmovement.

From the bar L projects a pin, h, which en ters a slot, 1', in thecurved or bent rear end of an arm, M, said arm being pivoted to a bar,N, and its forward end provided with lips It, that straddle a segment,Q, secured under the base. I

By the backward and forward movement of its pivot, so that its forwardend will be thrown first to one side and then to the other. The forwardend of the arm M is provided with a foot, P, on which is a verticalspindle, m, to receive the spool R.-

p 'n is a spring attached to the arm M, and bearing against the lowerend of the spool, to support the same and create the necessary tensionTo the foot]? is attached a pair of pliers, S, to hold the end of thethread from the spool. At one side of the machine, under the base, is astationary pair of pliers consisting of two jaws, V V, closed by meansof a spring, p. These jaws are connected by means of a togglejoint, V,for holding them open. As the arm M is thrown to that side of themachine a pin, :5, on the foot P strikes a pin, t, on the toggle-j oint,thereby breaking the joint and allowing the spring 1; to operate toclose the pliers.

Y represents a pivoted bent lever, one end of which is to bear againstthe toggle-j oint for opening the pliers when the other end of saidlever is provided with a cam, L, operated upon by a pin, 42, on an arm,w, projecting from the reciprocating cross-bar L.

On the opposite side of the machine from which is stationary and theother blade pivoted thereto, this latter blade being, by a link, y,connected to a pivoted lever, B. This lever is provided with inclines I)I), over which rides the cross-bar L, so that the movement of said barwill alternately open and close the shears.

In the center, on the under side of the base,

the cross-bar L the arm M will be turned on the pliers V is a pair ofshears, A, one blade of are suitableguides carrying a slide-bar, O,which is at its forward end provided with a head, D, having a series ofupwardly-projecting pins, (1. Under the head D, in bearings attached toits ends, is hung a bar, F, provided at each end with an arm, G, havinga and as this slide is drawn back the slide 0 moves with it for acertain distance, this movement being limited by a stop, i,'when theslide H will continue its movement sufficiently far to cause the bar Fto turn in its bearin gs and throw the arms G into a vertical position.In

like manner the forward movement of the slide H first throws the arms Gdown horizontally, and then the slide 0 is moved with it, suitablesprings m being arranged to give the required friction.

The operation of the machine is, briefly, as follows: The needles areforced through the paper to be stitched lying 011 the bed-plate,

the needles passing down through the slot in said .plate until theirhooks 00 will be below the plate, when a thread is drawn across and heldup to the needles until they pass back through the paper, carrying thethread with them, leavinga loop in the center, but pulling the two endsthrough in a convenient shape for tucking through the loop and tying.-At the upward stroke of the operating'lever F the pliers or nippers Scarry the thread across and deposit it in the pliers or nippers V, whichclose and take hold of it, the pliers S opening and dropping the same.At the reverse or downward motion of the lever the spool is carriedback, the thread unwinding and passing over the arms G and through theshears A. The shears cut the thread, the pliers S take hold of the newend,and the arms G carry the cut thread up to the needles, which then,on the return stroke of the lever, ascend and carry the thread withthem.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination of the base A, bed-plate B, having slot at and gageO, the cross-head D, with needle holder f and needles (1, the perforatedguide-bar G, links I), and operatinglever F, substantially as and forthe purposes herein set forth.

2. The pivoted arm M, carrying the spool It, and provided with thepliers or nippers S, for the purposes herein set forth. 3. Thecombination of the pivoted arm M, having slot 1', and carrying the spooland pliers, as described, lips 70, segment 0, and crossbar L, with pinh, all substantially as and for the purposes herein set forth.

4. The combination of the pliers V, spring 19, togglejoint W, lever Y,pin 0) on the arm 20 of the cross-bar L, and the pin it, substantiallyas and for the purpose herein set forth.

5. The combination of the shears A, link :1 lever B, with inclines M),and the cross-bar L, operated by the lever F and rods I J, substantiallyas and for the purpose herein set 'set forth.

6. The combination of the slide 0, with cross-head D, having pins d, thejournaled bar F, with arms G, the slide H, links I, angle-plate J, andpins f, all substantially as and for the purpose herein set forth.

7. The combination, with the slide HJand devices connected thereto, ofthe pin v,notch'ed cam L, and levers M M as and for the purpose hereinset forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

ASAHEL ALANSON JOHNSON.

Witnesses:

G. H. TALMADGE, J. H. LAKIN.

